To analyze the electricity consumption, to identify uneconomical operation and to avoid electricity wastage. This has to be replaced with some modifications like Reduction / stoppage of recirculation in pumping operation, Energy efficient survey of electrical motors and possibility of changing to energy efficient motors, Replacement of oversized / underloaded motors, Conversion of unmanned panel rooms to intelligent buildings, Identify general lighting load in plant lights, street lights, building lights for change over to  LED lamps & biosensors, Street light and Plant light automatic on/off control based on lux level to reduce the duration of lighting. More than 20 years ago, occupancy sensor controls for lighting systems have promised significant energy and dollar savings potential in a variety of commercial lighting applications. By automatically controlling lighting to turn lights off when spaces are unoccupied, occupancy sensors controls compliment connected load reductions accomplished by lamp and ballast retrofits, giving building owners and operators additional opportunities to improve energy savings without compromising lighting service to building occupants. Finally, modeling control scenarios with 5- to 20-minute time delay periods indicated savings potentials that were within the ranges suggested by the industry estimates. The time delay settings used for these analyses showed that energy savings can range from between 6% and 13% depending on the application and on which time out setting is used. In addition, the highest savings were obtained in the restroom application (47% to 60%), and the lowest in the break rooms (17% to 29%). Thus, the time delay selection can greatly impact energy savings. Although these savings are significant they do not consider the increased maintenance lamp and labor replacement costs that could result due to more frequent lamp switching. The methodology, energy consumption in buildings, analysis of specific parameters, energy savings for lighting, cooling & heating are discussed. Some choice of techniques are used to find out the solution for this problem esptrend analysis, linear trend method, gap analysis, internal rate of return etc. By measuring the consumption of retrofitted installations, concluded that an occupancy sensor can save up to 20% and a daylight dimming control system up to 26% by comparison with manual switching.

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Tue, 19/04/2011 - 21:18